2 layers146.9 × 56.6 mm JcOS, the printed circuit board in 3D

JcOS

A small kernel/OS written/re-written in Zig and C++

Size: 146.9 × 56.6 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 10
Nets: 89
Pads: 131
Tracks, vias: 190, 0
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 20 Dec 2024
Updated: 19 Jul 2026

Overview

JcOS is an open-source printed circuit board by jcsawyer, from the jcsawyer/JcOS repository on GitHub. It is a 2-layer board of 146.9 × 56.6 mm with 10 parts on 89 nets, routed with 190 tracks and 0 vias.

Its parts include 4 connectors, 3 ICs, 1 resistor and 1 switch.

README

README.md

Raspberry PI OS Tutorials translated from the Rust tutorials available here

Parts

Qty	Value	Footprint	References
2	Conn_01x04_Pin	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J1, J4
2	RPi_GPIO	RPI_Hat:RPI_Hat_B+	J2, J3
1	3.5" TFT LCD	Display:3.5_ TFT LCD	U2
1	LCD-16X2	LCD-16X2:MODULE_LCD-16X2	U1
1	R_Potentiometer	Potentiometer_THT:Potentiometer_Bourns_3386F_Vertical	RV1
1	R_Small	Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal	R1
1	SW_Push	Button_Switch_THT:SW_PUSH_6mm	SW1
1	~	Display:3.5_ TFT LCD	U2

Questions

How big is the JcOS PCB?

It measures 146.9 × 56.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the JcOS use?

10 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the JcOS KiCad files?

From the jcsawyer/JcOS repository on GitHub, at the commit this page was made from: the board is hardware/JcOS.kicad_pcb and its schematic hardware/JcOS.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the JcOS design in my own project?

Its repository states no licence, so its author keeps all rights: ask jcsawyer before reusing the design.

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/jcsawyer-jcos" title="JcOS in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/jcsawyer-jcos.jpg" alt="JcOS" width="1200" height="900">

A picture that opens the board, for a README

[![JcOS](https://pcbkit.io/embed/boards/jcsawyer-jcos.jpg?size=s)](https://pcbkit.io/boards/jcsawyer-jcos)

Source

Repository: jcsawyer/JcOS
Board file: hardware/JcOS.kicad_pcb
Commit: 23562f9
Licence: Not stated

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